Malware Analysis Report

2024-10-23 20:26

Sample ID 240904-2873razbjd
Target MemReduct.zip
SHA256 a1d210450efc6b44a3be6887b4517627548bda1dbb48850f18a3222a386ad816
Tags
xenorat discovery rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a1d210450efc6b44a3be6887b4517627548bda1dbb48850f18a3222a386ad816

Threat Level: Known bad

The file MemReduct.zip was found to be: Known bad.

Malicious Activity Summary

xenorat discovery rat trojan

Xenorat family

XenorRat

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-04 23:16

Signatures

Xenorat family

xenorat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-04 23:16

Reported

2024-09-04 23:18

Platform

win7-20240903-en

Max time kernel

141s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe"

Signatures

XenorRat

trojan rat xenorat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe

"C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe"

C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe

"C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /Create /TN "Steam_service" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC5CF.tmp" /F

Network

Country Destination Domain Proto
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp

Files

memory/2148-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

memory/2148-1-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe

MD5 ce1ea642a77b4bf6cbf7e8d74e800710
SHA1 afc6aae1d0c3aacdc7a75d6cee41a47c38a4fc14
SHA256 e82280dc7853b182380424e45b3494da52b00dbe80637a96614ebd23a5d06cc4
SHA512 b2f258c3fd14ee0166d0f420df879e4dbf0375aac91162c9948fafe7fb5bbd901b955bcf7f70fcf2b53b809b4df28f88b214065c62ed1e2b486315c8f4fdb7ae

memory/2160-9-0x00000000000D0000-0x00000000000E2000-memory.dmp

memory/2160-10-0x0000000074C90000-0x000000007537E000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmpC5CF.tmp

MD5 12a53938027cb86df0425cff9dd3040d
SHA1 e3c7aceee9ff0f623fac534d1ffd5bc9e73598e1
SHA256 e6b10b58165e00395126e6c12f2c47fd5886d8228ce21a06d7ec3bbec77e140d
SHA512 504c0e3bfac15684a818b434b93425e73a57c147ec259ea2d85bbfca6db171cb03983bbd95a1a54d067d611289d3892ac661ec48aee8610d15a9ded323d961b2

memory/2160-13-0x0000000074C90000-0x000000007537E000-memory.dmp

memory/2160-14-0x0000000074C90000-0x000000007537E000-memory.dmp

memory/2160-15-0x0000000074C90000-0x000000007537E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-04 23:16

Reported

2024-09-04 23:18

Platform

win10v2004-20240802-en

Max time kernel

143s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe"

Signatures

XenorRat

trojan rat xenorat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe

"C:\Users\Admin\AppData\Local\Temp\MemReduct\Memreduction22222.exe"

C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe

"C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks.exe" /Create /TN "Steam_service" /XML "C:\Users\Admin\AppData\Local\Temp\tmp88E7.tmp" /F

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp

Files

memory/4876-0-0x000000007466E000-0x000000007466F000-memory.dmp

memory/4876-1-0x0000000000670000-0x0000000000682000-memory.dmp

C:\Users\Admin\AppData\Roaming\XenoManager\Memreduction22222.exe

MD5 ce1ea642a77b4bf6cbf7e8d74e800710
SHA1 afc6aae1d0c3aacdc7a75d6cee41a47c38a4fc14
SHA256 e82280dc7853b182380424e45b3494da52b00dbe80637a96614ebd23a5d06cc4
SHA512 b2f258c3fd14ee0166d0f420df879e4dbf0375aac91162c9948fafe7fb5bbd901b955bcf7f70fcf2b53b809b4df28f88b214065c62ed1e2b486315c8f4fdb7ae

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Memreduction22222.exe.log

MD5 916851e072fbabc4796d8916c5131092
SHA1 d48a602229a690c512d5fdaf4c8d77547a88e7a2
SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
SHA512 07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

memory/5084-15-0x0000000074660000-0x0000000074E10000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp88E7.tmp

MD5 12a53938027cb86df0425cff9dd3040d
SHA1 e3c7aceee9ff0f623fac534d1ffd5bc9e73598e1
SHA256 e6b10b58165e00395126e6c12f2c47fd5886d8228ce21a06d7ec3bbec77e140d
SHA512 504c0e3bfac15684a818b434b93425e73a57c147ec259ea2d85bbfca6db171cb03983bbd95a1a54d067d611289d3892ac661ec48aee8610d15a9ded323d961b2

memory/5084-18-0x0000000074660000-0x0000000074E10000-memory.dmp

memory/5084-19-0x0000000074660000-0x0000000074E10000-memory.dmp